Specifications include, but are not limited to: 1. Construct 5 slabs on grade 12'-10"x7'-6"x5" thick with edges haunched to 1'-6" thick for new Pot Washing Station at five toilet buildings in Greenfield State Park.; 2. Form and place concrete for footings for a new Firewood Storage Shed 12'x30' in the parking lot of the Registration Building at Greenfield State Park. Pour and finish a 4" concrete floor slab for the Shed.; A. Slabs-on-Ground: Normal-weight concrete mixture. 1. Minimum COmpressive Strength: 4000 psi at 28 days.; 2. Maximum Water-Cementitious Materials Ratio: 0.45.; 3. Minimum Cementitious Materials Content: 540 lb/cu. yard; 4. Slump Limit: 4 inches, or, 8 inches for concrete with verified slump of 2 to 4 inches before adding high-range water-reducing admixture or plasticizing admixture, plus or minus 1 inch.
